Slide cradle for loom magazines



Dec. 27, 1927. 1,654,113

A. J. CHEVRETTE SLIDE CRADLE FOR LOOM MAGAZINES hi f-: M g

Patented Dec. 27, 1927.

UNITED STATES 1,654,113 PATENT OFFICE.

AUGUSTIN J'. CHEVRETTE, F WORCESTER, MASSACHUSETTS, ASSIGNOH TO GROMPTON' & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A GORPORATION OI MASSACHUSETTS.

Application filed December 30, 1926.

This invention relates to improvements in bobbin releasing mechanisms for weft replenishing looms more particularly of the multi-color type and it is the general object of the invention to provide cradles or re leasing device more positive in action. than those heretofore used and operative independently of slight variations in the diameters of the yarn mass wound on the bobbins.

When multi-color weft replenishing mech anisms of the type set forth in patent to Ryon #1,030,7el8, are used on two and tour shuttle looms, there is usually employed a roll cradle of the type shown in patent to VVyman #902,198, there being one of these cradles at the bottom of each stack of bobbins. This type of cradle oscillates about an axis parallel to the bobbin to be con trolled and has upper and lower portions for Said cradles occasionally deliver a bobbin so that the same travels toward transfer positionwith its axis oblique with respect to the shuttle to be replenished and this is likely to result in a faulty transfer. When replenishing looms of the type set forth in said patent to Ryon are used with six shuttles, there is usually employed at the bottom 01": each stack a pair 01 sliding members of the type set forth in patent to Ryon #1,005,- 321. These slides are so arranged that the upper supporting lug for the bobbin butt and the lower supporting lug for the bobbin tip are on one piece with the opposite arrangement oi lugs for the other slide. It occasionally happens when these slides are in a mid-position when moving from normal bobbin releasing position, that the bobbins may fall through the space between the lugs on the ends of the slide members. The cradles as set forth in the second Ryon patent mentioned also move in a direction parallel to the axis of the bobbin being controlled and it is found that because of this motion the lugs for the butt of the bobbin rings interfere with the movement of the slides.

It is an important object of my present invention to overcome the defects of the roll and slide cradles by providing a pair of sliding supports one of which carries the upper supports for both the butt and tip of a bobbin in the stack and the other of which carries both of the supports for the butt and tip of a bobbin in the cradle awaiting release.

It is a further object of my invention to engaging the butts and tips of the bobbins.

SLIDE CRADLE FOR LOOM MAGAZINES.

Serial No. 158,101.

provide slide members which have a movement transverse of the bobbin being operated upon so that the supporting lugs may move under a bobbin butt and tip to take advam tage of the rolling action which the bobbin may have when engaged by the supporting lugs. l

It is a still further object of my invention to provide a bobbin releasing device wherein the lower supports may be moved to bobbln receiving position prior to any movement oi the upper slide, this construction preventing bobbins from falling through the magazine with both cradles in 1nid-position.

lVith these and other objects which will appear as the description proceeds, my in vention relates to the arrangements and combins-trons of parts hereinafter set forth, and more particularly pointed out in the claims.

In the accompanying drawings, wherein a convenient embodiment of my invention is shown:

Fig' 1 is a side elevation taken from the interior of the loom and showing a multicolor weft replenishing mechanism having my 1nve11tion applied thereto,

Fig. 2 is a rear elevation taken in the direction of arrow 2 of Fig. 1, parts being removed and other parts being in sect-ion and showing a stack of bobbins with the cradle empty, this being the normal condition of the loom,

Fig. is a view similar to Fig. 2 but with a bobbin located in the cradle, this condit1on representing the first step in the move ment of the bobbin from the stack to transfer position over the depleted shuttle.

Figs. 4. and 5 are detailed horizontal sec tions on lines 1--1 and 5-5 of Figs. 2 and 3, respectively, and

Figs. 6, 7,8, 9 and 10 are detailed vertical sections indicating the sequence of movements attending the reception and releasing of a bobbin by the cradle, taken on line 6--6 of Fig. 2.

Referring to the drawings loom frame 10 supports a multicolor weft replenishing mechanism 11 which may be of the type set forth in patent to Ityon #1372316 with a transforrer arm 12 having a downward movement every alternate beat of the loom by means of a reciprocating rod 13. A bell crank lever 14 pivoted to the magazine as at 15 has a right hand oscillation about its center when indication of weft exhaustion is given, and has a left hand oscillation every non-detecting beat of the loom to raise a link 16 pivoted thereto. Said link is pivoted toa lever 17 a portion of which receives a tongue '18 forming part of a color slide 19 movable in bearings 20 under influence of some device in time with the box motion. Lifting fingers 21 are adapted for engagement with upper and lower lugs 22 and 23, respectively, of a plurality of vertical slides 24, there being one slide for each stack of bobbins. Said slide moves between guides 25 and each slide has the upper end formed with notches 26 between which lie a wedge 27. A spring plunger 28 is held in one or the other of the notches 26 and cooperates with the wedge 27 to insure completemovement of the slide in either direction, as set forth in my prior Patent No. 1,510,7 5.

At the time of indication of weft exhaustion the link 16 will be depressed by a right hand oscillation of lever 14 and this will rock the color slide in a right hand direction as viewed in Fig. 2, so that one or the other-of the fingers 21 will engage the upper lug of the slide corresponding to the ac tive shuttle, thus raising the slide from the position shown in Fig. 2 to that shown in Fig. 3. When the indicating shuttle is again picked to the magazine side of the loom the slide will be depressed by engagement of the lower lug 23 thereof by one of the finge'rs 21 and the slide which was previously in the position shown in Fig. 3 will be restored to the normal position shown in Fig. 2. The matter thus far described, with the exception of certain parts of the slide 24'to be pointed out more particularly hereinafter, is old and forms no part of my present invention. Although have shown the form of magazine wherein the weft detector is mounted on a regularly moving transferrer arm, yet I do not wish to be held to this construction as my invention can be applied to a magazine of the kind set forth in the aforesaid patent to Ryon #1,030,748.

-In carrying my invention into effect I provide means for controlling the movement of the lowermost bobbin in the stack corresponding to the shuttle giving indicationof weft exhaustion, and as these releasing devices are substantially the same I will describe but one of them. Said devices comprise generally a pair of sliding cradle members, movable laterally with respect to the stacks of bobbins and having bobbin supporting lugs. The upper sliding cradle member 40 has abutt and tip supporting lugs 41 and 42, respectively, both of said lugs being in position to support the lowermost bobbin B as shown in Fig. 2, when the mechanism is in normal position. Said slide member 40 is provided with an upwardly extending wing 43 having formed therein a slot 44 the lower end of which is vertical and the upper end of which is inclined to the left as shown in Fig. 2. A pin 45 rigid with the corresponding slide 24 passes through the slot and is the means by which vertical movement of the slide 24 is converted in horizontal movement of the cradle member 40. The latter is provided with a pair of horizontally disposed oblique slots 46 through which extend the upper ends of stationary pins 47.

The lower-cradle member 50 is similar 00 the upper member, being provided with a bobbin butt supporting lug 51 and a bobbin tip supporting lug 52 and having a downwardly extending wing 53 with a slot 54 therein the lower portion of which is inclined upwardly and the upper portion of which is vertical, said slot 54 receiving a pin 55 secured to and moving with the corresponding slide 24. Horizontal portions of said slide 50 are provided with oblique slots 56 through which extend the lower ends of the pins 47 Said slides 40 and 50 are guided in slots 60 formed in the magazine frame 11 and the latter is provided with flanges 61 to define aguideway for the butts of each stack of bobbins and may further be provided with flanges 62 for the bobbin tips of each stack, said flanges guiding the bobbins downwardly to the cradle or releasing device.

Under normal conditions the slides 24 will be down as shown in Fig. 2 and the cradles will be empty, i. e. the bobbins of each stack will be supported by the upper cradle member 40 with the latter in the position shown in Figs. 2 and 4-. \Vhen the slide 24 is raised as previously described pin 55 co-acting with the inclined slot 54 will move the lower slide to the left and by means of pins 47 and slots 56 the supporting lugs of said member 50 will be moved from the position shown in Fig. 6 to the bobbin supporting position shown in Fig. 7 by the time pin 55 reaches the vertical part of slide 54. As slide 24 continues its upward movement pin 45, which previously moved upwardly in the vertical portion of slot 44, will now engage the inclined part of the latter to move the upper cradle member to the right. By reason of slots 46 and pins 47 this latter movement of cradle member 40 will move the bobbin supporting lugs thereof outwardly from the position shown in Figs. 4 and 7 to the bobbin releasing position shown in Figs. 5 and 8. The stack of bobbins will thereupon descend, the lowest bobbin being held by the lugs on cradle members 50 which had previously been moved to bobbin supporting position, this action resulting as the slide finishes its upward movement. Said slide will remain raised until the indicating shuttle is again picked to the magazine side of the 100111 whereupon, by mechanism previously described and set forth more fully in the aforesaid patents, the slide will be moved downwardly. The first effect of this downward movement is to cause a left hand movement of the cradle member because of the fact that the pin is cooperating with the inclined part of slot at. The cradle member as will, therefore, move during the first part of the downward movement of slide 24, from the position shown in Figs. 5 and 8 to the bobbin supporting position shown in Figs. land 9 to hold the bobbins above the releasing device. As the slide 24 continues downwardly to its final position pin will leave the vertical part of slot 54; and engage the inclined part thereof to cause a movement to the right of cradle member 50. This will move the latter member from the position shown in Figs. 5 and 9 to the bobbin releasing position shown in Figs. t and 10 whereupon the bobbin, being unsupported, will fall downwardly and move along guides well understood toward transfer position.

From the foregoing it will be seen that I have provided a bobbin releasing device for each stack of bobbins wherein the cradle members each move as a whole laterally with respect to the axis of the bobbin being controlled and that the two cradle members move independently of each other and at different times. It will further be seen that the lower supporting lugs are moved into bobbin retaining position before the upper lugs are moved to release the bobbin so that there is no opportunity for a bobbin to pass through the releasing device as with the slide cradles set forth in the second previous ly mentioned patent to Ryon.

Having thus described my invention it will be apparent that changes and modifica' tions may be made therein by those skilled in the art without departing from the spirit and scope of the invention, and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a loom weft replenishing mechanism. means defining a guideway for a stack of bobbins, a bobbin releasing device located at the bottom of the stack and including a pair of vertically spaced independently mov able slide members each having a plurality of bobbin supporting portions, and means to move said members and their supporting portions toward. and from bobbin supporting position in a direction transverse to the axes of the bobbins.

2. In a loom weft replenishing mechanism, means defining a guideway for a stack of bobbins, a releasing device located at the bottom of the guideway, and including a pair of vertically spaced horizontally moving slide members each of which is provided with a 15 lurality of bobbin supporting portions, and means to move said members toward and from bobbin supporting position at different times to cause one of said slide members to operate in advance of the other.

In a loom weft replenishing mechanism, means defining a guidevvay for a stack of bobbins, a releasing device located at the bottonii of the guideway, and. including a pair of verti ally spaced horizontally mov ing slide members each of which is provided with a plurality of bobbin supporting portions, and means to move said members toward and from bobbin supporting position at different times to cause one of said slide members to operate in advance of the other, said means effective to move the members in a direction transversally relative to the axes of the bobbins.

1-. In a loom weft replenishing mechanism, means defining a guideway for a stack of bobbins, a releasing device located at the bottom of the guideway and having a pair of vertically spaced slide members the upper member having portions normally extending into the guideway to support the stack of bobbins and a lower slide member having portions normally out of bobbin supporting position, means to move said slide members so that the lower member will be in bobbin supporting position before the upper member is out of bobbin supporting position, and means to move said members in a direction transverse to the axes of the bobbins.

In testimony whereof I have hereunto a'llixed my signature.

AUGUSTIN J. CHEVRETTE. 

